Scissor jack



FIG. 1 is a Perspective view of a scissor jack showing my new design;

FIG. 2 is a Front view of the scissor jack as shown in FIG. 1;

FIG. 3 is a Back view of the scissor jack as shown in FIG. 1;

FIG. 4 is a Left-side view of the scissor jack as shown in FIG. 1;

FIG. 5 is a Right-side view of the scissor jack as shown in FIG. 1;

FIG. 6 is a Top view of the scissor jack as shown in FIG. 1; and,

FIG. 7 is Bottom view of the scissor jack as shown in FIG. 1.

The broken lines in the figures depict portions of the scissor jack, which form no part of the claimed design. 

CLAIM The ornamental design for a scissor jack, as shown and described. 